Multilingual website with automatic translation?

I wonder if we could simplify things and build a website in a single language, then let the browser translate it into the languages available—I assume—in Google.

If I understand correctly, the following website would work in this way, allowing users to select their language using the button at the top right. Moreover, I am surprised by the multitude of language options available on this site.

What’s your opinion?

Hi,
I followed the link you provided and found that the translation is made with : https://gtranslate.io

OK, thank you @annebourdon

Is anyone using it for their website?